Which principle states that in a closed system, mass and energy cannot be created or destroyed?
Who first showed the principle of conservation of mass and energy?
In a controlled experiment, how many variables are changed at a time?
The process by which scientific work is reviewed by other scientists before publication is called:
In the 1700s, scientists believed that materials which could burn contained a substance called:
Which scientist proved that combustion happens because of oxygen combining with substances?
The plum pudding model of the atom was proposed by:
A 95% confidence interval means that:
Getting the same result when repeating an experiment under the same conditions is called:
Getting the same result when the experiment is done in different labs with different tools is called:
